RoHS Compliant Serial ATA Flash Drive Datasheet for SAFD 254 January 14, 2011 Version 1.5 Apacer Technology Inc. th th 4 Fl., 75 Xintai 5 Rd., Sec.1, Hsichih, New Taipei City, Taiwan 221 Tel: +886-2-2698-2888 www.apacer.com Fax: +886-2-2698-2889 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Features: Standard Serial ATA 2.6 (Gen. 2) – Serial ATA 2.6 (Gen. 2) – SATA II, 3.0 Gbps – ATA-compatible command set Capacities – 8, 16, 32, 64, and 128 GB Performance – Burst read/write: 300 MB/sec – Sustained read: up to 168 MB/sec – Sustained write: up to 138 MB/sec Intelligent endurance design – Built-in hardware ECC, enabling up to 8/15 bit correction per 512 bytes – Global wear-leveling scheme together with dynamical block allocation to significantly increase the lifetime of a flash device and optimize the disk performance – Flash bad-block management – S.M.A.R.T. technology – Power Failure Management – Quick Erase NAND Flash Type: * Varies from capacities. Zero power data retention – No battery required for data storage Temperature ranges – Operation: Standard: 0°C to 70°C Extended Temperature: -40°C to 85°C – Storage: -40°C to 100°C Supply voltage – 5.0 V ±10% Low power consumption* – Active mode: 455 mA (5.0 V) – Idle mode: 145 mA (5.0 V) Form factor – 2.5 inch Connector – 7-pin SATA male connector – 15-pin SATA power connector RoHS compliant SLC 1 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Table of Contents 1. Product Description ................................................................................................. 4 1.1 Introduction .................................................................................................................................. 4 1.2 Functional Block Diagram........................................................................................................... 4 1.3 ATA Mode Support....................................................................................................................... 5 1.4 Capacity Specification ................................................................................................................. 5 1.5 Performance ................................................................................................................................. 5 1.6 Pin Assignments .......................................................................................................................... 6 2. Software Interface .................................................................................................... 8 2.1 Command Set ............................................................................................................................... 8 2.1.1 Check Power Mode (E5h) .............................................................................................. 10 2.1.2 Execute Diagnostics (90h) ............................................................................................. 10 2.1.3 Flush Cache (E7h) ......................................................................................................... 10 2.1.4 Identify Device (ECh) ..................................................................................................... 10 2.1.5 Idle (E3h)........................................................................................................................ 18 2.1.6 Idle Immediate (E1h)...................................................................................................... 18 2.1.7 Initialize Drive Parameters (C8h) ................................................................................... 18 2.1.8 Read DMA (C8h)............................................................................................................ 19 2.1.9 Read Multiple (C4h) ....................................................................................................... 19 2.1.10 Read Sector(s) (20h)...................................................................................................... 19 2.1.11 Read Verify Sector(s) (40h) ........................................................................................... 19 2.1.12 Recalibrate (10h)............................................................................................................ 19 2.1.13 Security Disable Password (F6h)................................................................................... 19 2.1.14 Security Erase Prepare (F3h) ........................................................................................ 19 2.1.15 Security Erase Unit (F4h)............................................................................................... 19 2.1.16 Security Freeze Lock (F5h)............................................................................................ 20 2.1.17 Security Set Password (F1h) ......................................................................................... 20 2.1.18 Security Unlock (F2h)..................................................................................................... 20 2.1.19 Seek (7xh) ...................................................................................................................... 20 2.1.20 Set Features (EFh)......................................................................................................... 20 2.1.21 Set Multiple Mode (C6h) ................................................................................................ 20 2.1.22 Sleep (E6h) .................................................................................................................... 20 2.1.23 SMART (B0h) ................................................................................................................. 21 2.1.24 Standby (E2h) ................................................................................................................ 23 2.1.25 Standby Immediate (E0h) .............................................................................................. 23 2.1.26 Write DMA (CAh) ........................................................................................................... 24 2.1.27 Write Multiple (C5h) ....................................................................................................... 24 2.1.28 Write Sector(s) (30h)...................................................................................................... 24 2.2 S.M.A.R.T. Technology .............................................................................................................. 25 3. Flash Management ................................................................................................. 26 3.1 Error Correction/Detection........................................................................................................ 26 3.2 Bad Block Management............................................................................................................. 26 2 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 3.3 Wear Leveling ............................................................................................................................. 26 3.4 Power Failure Management....................................................................................................... 26 3.5 Quick Erase................................................................................................................................. 26 4. Environmental Specifications ............................................................................... 27 4.1 Environments ............................................................................................................................. 27 4.2 Mean Time Between Failures (MTBF) ...................................................................................... 27 4.3 Certification and Compliance ................................................................................................... 27 5. Electrical Characteristics ...................................................................................... 28 5.1 Operating Voltage ...................................................................................................................... 28 6. Physical Characteristics........................................................................................ 29 7. Product Ordering Information ............................................................................... 30 7.1 Product Code Designations ...................................................................................................... 30 7.2 Valid Combinations.................................................................................................................... 31 3 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 1. Product Description 1.1 Introduction Apacer’s Serial ATA Flash Drive (SAFD) is a solid-state disk (SSD) drive that contains a controller, embedded firmware, and flash media along with a male connector. Using NAND flash memory devices, the SAFD drive interfaces with the host allowing data to be seamlessly transferred between the host and the flash devices. The SAFD 254 drive is designed with a single-chip controller, offering capacities of up to 128 gigabytes and providing full support for the SATA II high-speed interface standard. It can operate at sustained access rates of up to 168 megabytes per second, which is much faster than any other solid-state or traditional SATA drive currently available on the market. In addition to buffer management through dynamical allocation, the SAFD 254 adopts the Apacer-specific static wear-leveling scheme to allow uniform use of all storage blocks, ensuring that the lifetime of a flash media can be significantly increased and the disk performance is optimized as well. The SAFD 254 provides the S.M.A.R.T. feature that follows the SATA Rev. 2.6, ATA/ATAPI-7 specifications and uses the standard SMART command B0h to read data from the drive. This feature protects the user from unscheduled downtime by monitoring and storing critical drive performance. 1.2 Functional Block Diagram The SAFD 254 drive includes a single-chip SATA II Controller and the flash media, as well as the SATA standard interface. The controller integrates the flash management unit with the controller itself to support multi-channel, multi-bank flash arrays. Figure 1-1 shows the functional block diagram. Figure 1-1 Apacer SAFD 254 block diagram 4 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 1.3 ATA Mode Support The SAFD 254 provides ATA mode support as follows: 1.4 Up to PIO mode-4 Up to Multiword DMA mode-2 Up to UDMA mode-5 Capacity Specification Capacity specification of the SAFD product family is available as shown in Table 1-1. It lists the specific capacity, the default numbers of logical cylinders and heads, and the number of logical sectors per track for each product line. Table 1-1 Capacity specification Capacity Total Bytes Cylinders Heads Sectors Max LBA* 8 GB 8,061,419,520 15620 16 63 15,744,960 16 GB 16,139,681,792 16383 16 63 31,522,816 32 GB 32,296,140,800 16383 16 63 63,078,400 64 GB 64,609,058,816 16383 16 63 126,189,568 128 GB 129,234,894,848 16383 16 63 252,411,904 *Cylinders, heads or sectors are not applicable for these capacities. Only LBA addressing applies. 1.5 Performance Performance of the SAFD is shown in Table 1-2. Table 1-2 Performance specification Capacity Performance Sustained Read (MB/s) Sustained Write (MB/s) 8GB 16GB 32GB 64GB 128GB 168 160 167 167 167 91 143 135 138 138 Note: Performances vary from different configurations. 5 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 1.6 Pin Assignments Table 1-3 describes the SAFD signal segment, and Table1-4, its power segment. Table 1-3 Signal segment Name Type S1 GND S2 RxP S3 RxN S4 GND S5 TxN S6 TxP S7 GND Table 1-4 Power segment Description Serial Data Receiver Serial Data Transmitter Pin Signal/Description P1 Not used (3.3V) P2 Not used (3.3V) P3 Not used (3.3V) P4 Ground P5 Ground P6 Ground P7 5V Pre-Charge P8 5V P9 5V P10 Ground P11 Ground/Reserved* P12 Ground P13 Not used (12V Pre-Charge) P14 Not used (12V) P15 Not used (12V) *Signal described as ground/reserved applies to 128GB extended temperature model exclusively, and described as ground, to all others. 6 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Figure 1-2 SATA Cable/Connector Connection Diagram The connector on the left represents the Host with TX/RX differential pairs connected to a cable. The connector on the right shows the Device with TX/RX differential pairs also connected to the cable. Notice also the ground path connecting the shielding of the cable to the Cable Receptacle. 7 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 2. Software Interface 2.1 Command Set Table 2-1 summarizes the ATA commands supported by the SAFD254. Table 2-1 Command set (1 of 2) Command 1 2 3 4 5 FR SC SN CY Check-Power-Mode E5H - - - - D 8 - Execute-Drive-Diagnostic 90H - - - - D - Flush-Cache E7H - - - - D - Identify-Drive ECH - - - - D - Idle E3H - Y - - D - Idle-Immediate E1H - - - - D - Initialize-Drive-Parameters 91H - Y - - Y - C8H or C9H - Y Y Y Y Y C4H - Y Y Y Y Y Read-Sector(s) 20H or 21H - Y Y Y Y Y Read-Verify-Sector(s) 40H or 41H - Y Y Y Y Y Recalibrate 10H - - - - D - Security-Disable-Password F6H - - - - D - Security-Erase-Prepare F3H - - - - D - Security-Erase-Unit F4H - - - - D - Security-Freeze-Lock F5H - - - - D - Security-Set-Password F1H - - - - D - Security-Unlock F2H - - - - D - Seek 7XH - - Y Y - D Read-DMA Read-Multiple Set-Features EFH 7 Y - - DH 6 Code LBA - 8 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Table 2-1 Command set (2 of 2) Command 1 2 3 Code FR SC SN CY Set-Multiple-Mode C6H - Y - Sleep E6H - - SMART B0H Y Standby E2H Standby-lmmediate 4 5 6 DH LBA - D - - - D - Y Y Y D - - - - D - E0H - - - - D - Write-DMA CAH - Y Y Y Y Y Write-Multiple C5H - Y Y Y Y Y Write-Sector(s) 30H - Y Y Y Y Y 1. FR - Features register 2. SC - Sector Count register 3. SN - Sector Number register 4. CY - Cylinder registers 5. DH - Drive/Head register 6. LBA - Logical Block Address mode supported (see command descriptions for use) 7. Y - The register contains a valid parameter for this command. 8. For the Drive/Head register: Y means both the SAFD and Head parameters are used D means only the SAFD parameter is valid and not the Head parameter 9 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 2.1.1 Check Power Mode (E5h) The host can use this command to determine the current power management mode. 2.1.2 Execute Diagnostics (90h) This command performs the internal diagnostic tests implemented by the drive. See ERROR register for diagnostic codes. 2.1.3 Flush Cache (E7h) This command is used by the host to request the device to flush the write cache. If there is data in the write cache, that data shall be written to the media. The BSY bit shall remain set to one until all data has been successfully written or an error occurs. 2.1.4 Identify Device (ECh) This command read out 512 Bytes of drive parameter information. Parameter information consists of the arrangement and value as shown in the following table. This command enables the host to receive the Identify Drive Information from the device. Identify Device Information Default Value (1/9) Word Value F/V Description General configuration bit-significant information: 0 0040h F 15 0 = ATA device X 14-8 Retired F 7 1 = removable media device X 6 Obsolete X 5-3 Retired F 2 Reserved X 1 Retired F 0 Reserved 1 XXXXh X Number of logical cylinders 2 C837h V Specific configuration 3 00XXh X Number of logical heads 4-5 XXXXh X Retired 6 XXXXh X Number of logical sector per logical track 7-8 XXXXh V Reserved for assignment by the Compact Flash Association 9 000Eh X Retired 10-19 XXXXh F Serial number (20 ASCII characters) 20-21 XXXXh X Retired 10 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Identify Device Information Default Value (2/9) Word Value F/V Description 22 003Fh X Obsolete 23-26 XXXXh F Firmware revision (8 ASCII characters) 27-46 XXXXh F Model number (40 ASCII characters) F 15-8 80h F 7-0 00h = Reserved 47 8000h F 48 4000h F 01h = Maximum number of 1 sector on READ/WRITE MULTIPLE commands Reserved Capabilities F 15-14 Reserved for the IDENTIFY PACKET DEVICE command F 13 1 = Standby timer values as specified in this standard are supported. 0 = Standby timer values shall be managed by the device. 49 2F00h F 12 Reserved for the IDENTIFY PACKET DEVICE command F 11 1 = IORDY supported 0 = IORDY may be supported F 10 1 = IORDY may be disabled F 9 1 = LBA supported F 8 1 = DMA supported X 7-0 Retired Capabilities 50 51 52 4000h 0280h 0000h F 15 Shall be cleared to zero F 14 Shall be set to one F 13-2 Reserved X 1 Obsolete F 0 Shall be set to one to indicate a device specific Standby timer value minimum X 15-8 PIO data transfer cycle timing mode 7-0 Reserved X Obsolete 11 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Identify Device Information Default Value (3/9) Word Value F/V Description F 15-3 Reserved F 2 1 = the fields reported in word 88 are valid 0 = the fields reported in word 88 are not valid 53 0007h F 1 1 = the fields reported in word 70:64 are valid 0 = the fields reported in word 70:64 are not valid X 0 1 = the fields reported in word 58:54 are valid 0 = the fields reported in word 58:54 are not valid 54 XXXXh X Number of current cylinders 55 00XXh X Number of current heads 56 XXXXh X Number of current sector per track 57-58 XXXXh X Current capacity in sectors F 15-9 Reserved V 8 1 = Multiple sector setting is valid V 7-0 xxh = Setting for number of sectors that shall be transferred per interrupt on R/W Multiple command 59 0000h 60-61 XXXXh F Total number of user addressable sectors 62 0000h X Obsolete F 15-11 Reserved V 10 1 = Multiword DMA mode 2 is selected 63 0 = Multiword DMA mode 2 is not selected V 9 1 = Multiword DMA mode 1 is selected 0 = Multiword DMA mode 1 is not selected 0007h V 8 1 = Multiword DMA mode 0 is selected 0 = Multiword DMA mode 0 is not selected F 7-3 Reserved F 2 1 = Multiword DMA mode 2 and below are supported F 1 1 = Multiword DMA mode 1 and below are supported F 0 1 = Multiword DMA mode 0 and below are supported 12 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Identify Device Information Default Value (4/9) Word Value F/V Description 64 0003h F 15-8 Reserved F 7-0 Advanced PIO modes supported 65 0078h F Minimum Multiword DMA transfer cycle time per word 66 0078h F Manufacturer’s recommended Multiword DMA transfer cycle time 67 0078h F Minimum PIO transfer cycle time without flow control 68 0078h F Minimum PIO transfer cycle time with IORDY flow control 69-79 0000h F Reserved (for future command overlap and queuing) Major version number 0000h or FFFFh = device does not report version 80 81 01FEh 0021h F 15 Reserved F 14 Reserved for ATA/ATAPI-14 F 13 Reserved for ATA/ATAPI-13 F 12 Reserved for ATA/ATAPI-12 F 11 Reserved for ATA/ATAPI-11 F 10 Reserved for ATA/ATAPI-10 F 9 Reserved for ATA/ATAPI-9 F 8 Reserved for ATA/ATAPI-8 F 7 1 = supports ATA/ATAPI-7 F 6 1 = supports ATA/ATAPI-6 F 5 1 = supports ATA/ATAPI-5 F 4 1 = supports ATA/ATAPI-4 F 3 Obsolete X 2 Obsolete X 1 Obsolete F 0 Reserved F Minor version number 13 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Identify Device Information Default Value (5/9) Word Value F/V Description Command set supported 82 0068h X 15 Obsolete F 14 1 = NOP command supported F 13 1 = READ BUFFER command supported F 12 1 = WRITE BUFFER command supported X 11 Obsolete F 10 1 = Host Protected Area feature set supported F 9 1 = DEVICE RESET command supported F 8 1 = SERVICE interrupt supported F 7 1 = release interrupt supported F 6 1 = look-ahead supported F 5 1 = write cache supported F 4 Shall be cleared to zero to indicate that the PACKET Command feature set is not supported F 3 1 = mandatory Power Management feature set supported F 2 1 = Removable Media feature set supported F 1 1 = Security Mode feature set supported F 0 1 = SMART feature set supported Command set supported 83 5000h F 15 Shall be cleared to zero F 14 Shall be set to one F 13-9 Reserved F 8 1 = SET MAX security extension supported F 7 Reserved F 6 1 = SET FEATURES subcommand required to spin-up after power-up F 5 1 = Power-Up In Standby feature set supported F 4 1 = Removable Media Status Notification feature set supported F 3 1 = Advanced Power Management feature set supported F 2 1 = CFA feature set supported F 1 1 = READ/WRITE DMA QUEUED supported F 0 1 = DOWNLOAD MICROCODE command supported 14 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Identify Device Information Default Value (6/9) Word Value F/V Description Command set/feature supported extension 84 4000h F 15 Shall be cleared to zero F 14 Shall be set to one F 13-2 Reserved F 1 1 = SMARAT self-test supported F 0 1 = SMARAT error logging supported Command set/feature enabled 85 0008h X 15 Obsolete F 14 1 = NOP command enabled F 13 1 = READ BUFFER command enabled F 12 1 = WRITE BUFFER command enabled X 11 Obsolete V 10 1 = Host Protected Area feature set enabled F 9 1 = DEVICE RESET command enabled V 8 1 = SERVICE interrupt enabled V 7 1 = release interrupt enabled V 6 1 = look-ahead enabled V 5 1 = write cache enabled F 4 Shall be cleared to zero to indicate that the PACKET Command feature set is not supported F 3 1 = mandatory Power Management feature set enabled F 2 1 = Removable Media feature set enabled V 1 1 = Security Mode feature set enabled V 0 1 = SMART feature set enabled 15 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Identify Device Information Default Value (7/9) Word Value F/V Description Command set/feature enabled 86 5000h F 15-9 Reserved F 8 1 = SET MAX security extension enabled by SET MAX SET PASSWORD F 7 See Address Offset Reserved Area Boot, INCITS TR27:2001 F 6 1 = SET FEATURES subcommand required to spin-up after power-up F 5 1 = Power-Up In Standby feature set enabled F 4 1 = Removable Media Status Notification feature set enabled F 3-1 1 = Advanced Power Management feature set enabled F 0 1 = DOWNLOAD MICROCODE command supported Command set/feature default 87 4000h F 15 Shall be cleared to zero F 14 Shall be set to one F 13-2 Reserved F 1 1 = SMARAT self-test supported F 0 1 = SMARAT error logging supported 16 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Identify Device Information Default Value (8/9) Word Value F/V V Description 15-13 Reserved 12 1 = Ultra DMA mode 4 is selected 0 = Ultra DMA mode 4 is not selected V 11 1 = Ultra DMA mode 3 is selected 0 = Ultra DMA mode 3 is not selected V 10 1 = Ultra DMA mode 2 is selected 0 = Ultra DMA mode 2 is not selected V 88 9 1 = Ultra DMA mode 1 is selected 0 = Ultra DMA mode 1 is not selected 203Fh V 8 1 = Ultra DMA mode 0 is selected 0 = Ultra DMA mode 0 is not selected F 7-5 Reserved F 4 1 = Ultra DMA mode 4 and below are supported F 3 1 = Ultra DMA mode 3 and below are supported F 2 1 = Ultra DMA mode 2 and below are supported F 1 1 = Ultra DMA mode 1 and below are supported F 0 1 = Ultra DMA mode 0 and below are supported 89 0000h F Time required for security erase unit completion 90 0000h F Time required for Enhanced security erase completion 91 0000h V Current advanced power management value 92 0000h V Master Password Revision Code 93 0000h X Hardware reset result 94-126 0000h V Reserved Removable Media Status Notification feature set support 127 0000h F 15-2 Reserved F 1-0 00 = Removable Media Status Notification feature set not supported 01 = Removable Media Status Notification feature set supported 10 = Reserved 11 = Reserved 17 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Identify Device Information Default Value (9/9) Word Value F/V Description Security status 128 0001h F 15-9 Reserved V 8 Security level 0 = High, 1 = Maximum F 7-6 Reserved F 5 1 = Enhanced security erase supported V 4 1 = Security count expired V 3 1 = Security frozen V 2 1 = Security locked V 1 1 = Security enabled F 0 1 = Security supported 129-159 0000h X Vendor specific 160-254 0000h X Reserved Integrity word 255 0000h X 15-8 Checksum 7-0 Signature Key: F/V = Fixed/variable content F = the content of word is fixed and does not change. For removable media devices, these values may change when media is removed or changed. V = the contents of the word is variable and may change depending on the state of the device or the commands executed by the device. X = the content of the word may be fixed or variable. 2.1.5 Idle (E3h) This command causes the device to set BSY, enter the Idle mode, clear BSY and generate an interrupt. If sector count is non-zero, the automatic power down mode is enabled. If the sector count is zero, the automatic power mode is disabled. 2.1.6 Idle Immediate (E1h) This command causes the device to set BSY, enter the Idle(Read) mode, clear BSY and generate an interrupt. 2.1.7 Initialize Drive Parameters (C8h) This command enables the host to set the number of sectors per track and the number of tracks per heads. 18 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 2.1.8 Read DMA (C8h) Read data from sectors during Ultra DMA and Multiword DMA transfer. Use the SET FEATURES command to specify the mode value. A sector count of zero requests 256 sectors. 2.1.9 Read Multiple (C4h) This command performs similarity to the Read Sectors command. Interrupts are not generated on each sector, but on the transfer of a block which contains the number of sectors defined by a Set Multiple command. 2.1.10 Read Sector(s) (20h) This command reads 1 to 256 sectors as specified in the Sector Count register from sectors which is set by Sector number register. A sector count of zero requests 256 sectors. The transfer beings specified in the Sector Number register. 2.1.11 Read Verify Sector(s) (40h) This command verifies one or more sectors on the drive by transferring data from the flash media to the data buffer in the drive and verifying that the ECC is correct. This command is identical to the Read Sectors command, except the DRQ is never set and no data is transferred to the host. 2.1.12 Recalibrate (10h) The current drive performs no processing if it receives this command. It is supported for backward compatibility with previous devices. 2.1.13 Security Disable Password (F6h) Disables any previously set user password and cancels the lock. The host transfers 512 bytes of data, as shown in the following table, to the drive. The transferred data contains a user or master password, which the drive compares with the saved password. If they match, the drive cancels the lock. The master password is still saved. It is re-enabled by issuing the SECURITY SET PASSWORD command to reset a user password. 2.1.14 Security Erase Prepare (F3h) This command shall be issued immediately before the Security Erase Unit command to enable erasing and unlocking. This command prevents accidental loss of data on the drive. 2.1.15 Security Erase Unit (F4h) The host uses this command to transfer 512 bytes of data, as shown in the following table, to the drive. The transferred data contains a user or master password, which the drive compares with the saved password. If they match, the drive deletes user data, disables the user password, and cancels the locks. The master password is still saved. It is re-enabled by issuing the SECURITY SET PASSWORD command to reset a user password. 19 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 2.1.16 Security Freeze Lock (F5h) Causes the drive to enter Frozen mode. Once this command has been executed, the following commands to update a lock result in the Aborted Command error: SECURITY SET PASSWORD SECURITY UNLOCK SECURITY DISABLE PASSWORD SECURITY ERASE PREPARE SECURITY ERASE UNIT The drive exits from Frozen mode upon a power-off or hard reset. If the SECURITY FREEZE LOCK command is issued when the drive is placed in Frozen mode, the drive executes the command, staying the Frozen mode. 2.1.17 Security Set Password (F1h) This command sets user password or master password. The host outputs sector data with PIO data-out protocol to indicate the information defined in the following table. 2.1.18 Security Unlock (F2h) This command disables LOCKED MODE of the device. This command transfers 512 byte of data from the host with PIO data-out protocol. The following table defines the content of this information. 2.1.19 Seek (7xh) This command is effectively a NOP command to the device although it does perform a range check. 2.1.20 Set Features (EFh) This command set parameter to Features register and set drive’s operation. For transfer mode, parameter is set to Sector Count register. This command is used by the host to establish or select certain features. Features register Value and settable operating mode Value 02h 03h 55h 82h AAh Function Enable write cache Set transfer mode based on value in Sector Count register. Disable read look-ahead feature Disable write cache Enable read look-ahead feature 2.1.21 Set Multiple Mode (C6h) This command enables the device to perform READ MULTIPLE and WRITE MULTIPLE operations and establishes the block count for these commands. 2.1.22 Sleep (E6h) This command causes the device to set BSY, enter the Sleep mode, clear BSY and generate an interrupt. 20 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 2.1.23 SMART (B0h) Performs different processing required for predicting device failures, according to the subcommand specified in the Features register. If the Features register contains an unsupported value, the Aborted Command error is returned. If the SMART function is disabled, any subcommand other than SMART ENABLE OPERTIONS results in the Aborted Command error. Code D0h D1h D2h D3h D4h D5h D6h D8h D9h DAh DBh Smart Subcommand READ DATA READ ATTRIBUTE THRESHOLDS ENABLE/DISABLE ATTRIBUTE AUTOSAVE SAVE ATTRIBUTE VALUES EXECUTE OFF-LINE IMMIDIATE* Reserved Reserved ENABLE OPERATIONS DISABLE OPERATIONS RETURN STATUS ENABLE/DISABLE AUTO OFF-LINE* SMART READ DATA This command returns 512-byte SMART Data Structure to the host with PIO data-in protocol. The register file has to contain D0h for Features register, 4Fh for LBA Mid register and C2h for the LBA High register. Byte 0-1 2-13 14-361 362 363 364-365 366 367 368-369 370-385 386-510 511 Description Data structure revision number 1st attribute data 2nd-30th Individual attribute data Off-line data collection status Reserved Total time in seconds to complete off-line data collection Reserved Off-line data collection capability SMART capability Reserved Reserved Data structure checksum Byte 2-361: Individual attribute data Byte 0 1-2 3 4-11 Description Attribute ID Status Flag (0x0002) Attribute Value (0x64) Vendor Specific 21 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT The attribute ID information is listed in the following table ID Description Detail Information Byte Description 0 Halt System ID 1 Flash ID (byte 1) 2 Flash ID (byte 2) 3 Flash ID (byte 3) 4 Flash ID (byte 4) 5 Flash ID (byte 5) 6 Flash ID (byte 6) 7 Flash ID (byte 7) 0 Year (High Byte, ASCII) 1 Year (Low Byte, ASCII) 2 Month (High Byte, ASCII) 3 Month (Low Byte, ASCII) Day (High Byte, ASCII) 4 Day (Low Byte, ASCII) 5 6 Channels (binary) 7 Banks (binary) E5h Halt System ID, Flash ID E8h Firmware version information E9h ECC Fail Record EAh Average Erase Count, Max Erase Count EBh Good Block Count, System Block Count ECh-FFh Reserved 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 ECC fail number Row address 3 Row address 2 Row address 1 Channel number of last ECC fail Bank number of last ECC fail Reserved Reserved Average Erase Count (High Byte) Average Erase Count Average Erase Count (Low Byte) Max Erase Count (High Byte) Max Erase Count Max Erase Count (Low Byte) Reserved Reserved Good Block Count (High Byte) Good Block Count Good Block Count (Low Byte) System(Free) Block Count (High Byte) System(Free) Block Count Count System(Free) Block Count Count (Low Byte) Reserved Reserved SMART READ ATTRIBUTE THRESHOLD This transfers 512 bytes of drive failure threshold data to the host. SMART ENABLE/DISABLE ATTRIBUTE AUTOSAVE Enables or disables the attribute value autosave function. This command specifies whether the current attribute values are automatically saved to the drive when it changes the mode. This setting is maintained when the power is turned on and off. SMART SAVE ATTRIBUTE VALUE Saves any modified attribute values. 22 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT SMART ENABLE OPERATIONS Enables the SMART function. This setting is maintained when the power is turned off and then back on. Once the SMART function is enabled, subsequent SMART ENABLE OPERATIONS commands do not affect any parameter. SMART DISABLE OPERATIONS Disables the SMART function. Upon receiving the command, the drive disables all SMART operations. This setting is maintained when the power is turned off and then back on. Once this command has been received, all SMART commands other than SMART ENABLE OPERATIONS are aborted with the Aborted Command error. This command disables all SMART capabilities including any and all timer and event count functions related exclusively to this feature. After command acceptance, this controller will disable all SMART operations. SMART data is no longer be monitored or saved. The state of SMART is preserved across power cycles. SMART RETUREN STATUS Reports the drive reliability status. Values reported when a predicted defect has not been detected: Cylinder Low register: 4Fh Cylinder High register: C2h Values reported when a predicted defect has been detected: Cylinder Low register: F4h Cylinder High register: 2Ch SMART ENABLE/DISABLE AUTOMATIC OFF-LINE Enables (when Sector Count register = “F8h”) or disables (Sector Count register = “00h”) the automatic off-line data collection function. The automatic collection is disabled if a value of “00h” is set in the Sector Count register before a subcommand is issued. If automatic collection is disabled, the drive can still save attribute information during normal operation, such as during the power-on/off sequence or error correction sequence. The automatic collection function is enabled if a value of “F8h” is set in the Sector Count register before the command is issued. Values other than “00h” and “F8h” are vendor-specific. 2.1.24 Standby (E2h) This command causes the device to set BSY, enter the Sleep mode (which corresponds to the ATA “Standby” Mode), clear BSY and return the interrupt immediately. 2.1.25 Standby Immediate (E0h) This command causes the device to set BSY, enter the Sleep mode (which corresponds to the ATA “Standby” Mode), clear BSY and return the interrupt immediately. 23 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 2.1.26 Write DMA (CAh) Write data to sectors during Ultra DMA and Multiword DMA transfer. Use the SET FEATURES command to specify the mode value. 2.1.27 Write Multiple (C5h) This command is similar to the Write Sectors command. Interrupts are not presented on each sector, but on the transfer of a block which contains the number of sectors defined by Set Multiple command. 2.1.28 Write Sector(s) (30h) Write data to a specified number of sectors (1 to 256, as specified with the Sector Counter register) from the specified address. Specify “00h” to write 256 sectors. 24 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 2.2 S.M.A.R.T. Technology S.M.A.R.T. is an acronym for Self-Monitoring, Analysis and Reporting Technology, an open standard allowing disk drives to automatically monitor their own health and report potential problems. It protects the user from unscheduled downtime by monitoring and storing critical drive performance and calibration parameters. Ideally, this should allow taking proactive actions to prevent impending drive failure. Apacer SAFD254 uses the standard SMART command B0h to read data from the drive for SMART feature as the SATA Rev.2.6 ATA/ATAPI-7 specifications. Based on the SFF-8035i Rev. 2.0 specifications, Apacer SMART defines 3 vendor-specified SMART Attribute IDs (E5h, EAh-EBh, and E8h) in the SAFD254. They represent Flash ID, maximum erase count, average erase count, good block count, free-list block count, and firmware version information. When the Apacer SMART Utility running on the host, it analyzes and reports the disk status to the host before the SAFD254 is in critical condition. 25 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 3. Flash Management 3.1 Error Correction/Detection The SAFD254 implements a hardware ECC scheme, based on the BCH algorithm. It can detect and correct up to 8 bits or 15 bits error in 512 bytes. 3.2 Bad Block Management Although bad blocks on the flash media are already identified by the flash manufacturer, they can also be accumulated over time during operation. The SAFD254’s controller maintains a table that lists those normal blocks with disk data, the free blocks for wear leveling, and bad blocks with errors. When a normal block is detected broken, it is replaced with a free block and listed as a bad block. When a free block is detected broken, it is then removed from the free block list and marked as a bad block. During device operation, this ensures that newly accumulated bad blocks are transparent to the host. The device will stop file write service once there are only two free blocks left such that the read function is still available for copying the files from the disk into another. 3.3 Wear Leveling The NAND flash devices are limited by a certain number of write cycles. When using a FAT-based file system, frequent FAT table updates are required. If some area on the flash wears out faster than others, it would significantly reduce the lifetime of the whole SSD, even if the erase counts of others are far from the write cycle limit. Thus, if the write cycles can be distributed evenly across the media, the lifetime of the media can be prolonged significantly. This scheme is called wear leveling. Apacer’s wear-leveling scheme is achieved both via buffer management and Apacer-specific static wear leveling. They both ensure that the lifetime of the flash media can be increased, and the disk access performance is optimized as well. 3.4 Power Failure Management The Low Power Detection on the controller initiates crucial data saving before the power supplied to the device is too low. This feature prevents the device from crash and ensures data integrity during an unexpected power-off. 3.5 Quick Erase Accomplished by the Secure Erase (SE) command, which added to the open ANSI standards that control disk drives, “Quick Erase” is built into the disk drive itself and thus far less susceptible to malicious software attacks than external software utilities. It is a positive easy-to-use data destroy command, amounting to electronic data shredding. Executing the command causes a drive to internally completely erase all possible user data. This command is carried out within disk drives, so no additional software is required. Once executed, neither data nor the erase counter on the device would be recoverable, which blurs the accuracy of device lifespan. The process to erase will not be stopped until finished while encountering power failure, and will be continued when power is back on. 26 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 4. Environmental Specifications 4.1 Environments The SAFD 254 environmental specifications follow the US Military Standard MIL-STD-810F, as shown in Table 4-1. Table 4-1 SAFD 254 environmental specifications Environment Temperature Humidity Vibration Shock - Operating Specification 0°C to 70°C (Operating – Standard); -40°C to 85°C ( Operating – ET*) -40°C to 100°C (Non-operating) 5% to 95% RH (Non-condensing) Sine wave: 5~55~5 Hz (X, Y, Z) Random: 10-2000 Hz, 16.3 G (X, Y, Z) Acceleration: 1,500 G, 0.5 ms Peak acceleration: 50 G, 11 ms Altitude 80,000 ft *Extended Temperature 4.2 Mean Time Between Failures (MTBF) Mean Time Between Failures (MTBF) is predicted based on reliability data for the individual components in the SAFD drive. Although many component MTBFs are given in databases and often these values are not really accurate, the prediction result for the SAFD 254 is more than 2,000,000 hours. 4.3 Certification and Compliance The SAFD 254 drive complies with the following standards: CE – EN55022/55024 FCC 47CFR Part15 Class B RoHS MIL-STD-810F SATA II (SATA Rev. 2.6) Up to ATA/ATAPI-7 ( including S.M.A.R.T.) 27 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 5. Electrical Characteristics 5.1 Operating Voltage Table 5-1 lists the supply voltage for SAFD 254. Table 5-1 SAFD 254 operating voltage Parameter Supply voltage Conditions 5.0 V ±10% ( 4.5-5.5 V) 28 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 6. Physical Characteristics Figure 6-1 illustrates the overall dimensions of the SAFD drive, as listed in Table 6-1. Table 6-1 SAFD dimensions Dimension Millimeters (mm) Height 9.30 ± 0.10 Width 69.85 ± 0.10 Length 100.00 ± 0.10 LED 3 LED 2 Figure 6-1 SAFD physical dimensions LED 2: SATA Link LED 3: Access (R/W) Unit: mm 29 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 7. Product Ordering Information 7.1 Product Code Designations A P – SAFD 254 Q A x x x x S – XX H T Flash Type Version Control Temperature Range Blank: Standard ET: Extended Temperature Environmental Specification Capacities: 008G: 016G: 032G: 064G: 128G: 8 GB 16 GB 32 GB 64 GB 128 GB Apacer Brand Solution version 2.5 inch Form Factor Serial ATA Flash Drive Apacer Product Code 30 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT 7.2 Valid Combinations Capacity Standard Extended Temperature 8 GB AP-SAFD254QA008GS-HT AP-SAFD254QA008GS-ETHT 16 GB AP-SAFD254QA016GS-HT AP-SAFD254QA016GS-ETHT 32 GB AP-SAFD254QA032GS-HT AP-SAFD254QA032GS-ETHT 64 GB AP-SAFD254QA064GS-HT AP-SAFD254QA064GS-ETHT 128 GB AP-SAFD254QA128GS-HT AP-SAFD254QA128GS-ETHT Note: Valid combinations are those products in mass production or will be in mass production. Consult your Apacer sales representative to confirm availability of valid combinations and to determine availability of new combinations. 31 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Revision History Revision Description Date 1.0 Official release May 22, 2009 1.1 Supplemented quick erase related information Jun. 18, 2009 1.2 Updated feature item Aug. 27, 2009 1.3 Updated product ordering information Dec. 17, 2009 1.4 Updated global presence Aug. 17, 2010 1.5 Updated product ordering information Jan. 14, 2011 32 ©2011 Apacer Technology Inc. Rev. 1.5 Serial ATA Flash Drive AP-SAFD254QAxxxxS-XXHT Global Presence Taiwan (Headquarters) Apacer Technology Inc. th th 4 Fl., 75 Xintai 5 Rd., Sec.1 Hsichih, New Taipei City Taiwan 221 R.O.C. Tel: +886-2-2698-2888 Fax: +886-2-2698-2889 [email protected] U.S.A. Apacer Memory America, Inc. 386 Fairview Way, Suite102, Milpitas, CA 95035 Tel: 1-408-518-8699 Fax: 1-408-935-9611 [email protected] Japan Apacer Technology Corp. 5F, Matsura Bldg., Shiba, Minato-Ku Tokyo, 105-0014, Japan Tel: 81-3-5419-2668 Fax: 81-3-5419-0018 [email protected] Europe Apacer Technology B.V. Aziëlaan 22, 5232 BA 's-Hertogenbosch, The Netherlands Tel: 31-73-645-9620 Fax: 31-73-645-9629 [email protected] China Apacer Electronic (Shanghai) Co., Ltd 1301, No.251,Xiaomuqiao Road, Shanghai, 200032, China Tel: 86-21-5529-0222 Fax: 86-21-5206-6939 [email protected] India Apacer Technologies Pvt Ltd, #1064, 1st Floor, 7th ‘A’ Main, 3rd Block Koramangala, Bangalore – 560 034 Tel: +91 80 4152 9061/62/63 Fax: +91 80 4170 0215 [email protected] 33 ©2011 Apacer Technology Inc. Rev. 1.5 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Apacer: AP-SAFD254QA128GS-ETHT AP-SAFD254QA128GS-HT